EP 0074144 B1 19860319 - OPTICAL SWITCH
Title (en)
OPTICAL SWITCH
Publication
Application
Priority
NL 8104122 A 19810907
Abstract (en)
[origin: CA1180095A] PHN 10.149 11 The electro-optical switch in accordance with the invention comprises one or more nematic crystals for the deflection of polarized light. In order to enable deflection of a light beam in two perpendicular directions by means of two electrically controllable crystals, the bean of unpolarized light is converted into a beam of polarized light in a low-lose manner.
IPC 1-7
IPC 8 full level
G02B 26/08 (2006.01); G02F 1/13 (2006.01); G02F 1/29 (2006.01); G02F 1/31 (2006.01)
CPC (source: EP US)
Citation (examination)
- OPTICS LETTERS, vol. 6, no. 6, June 1981, pages 275-277, New York (USA); R.A. SOREF: "Low-cross-talk 2 x 2 optical switch".
- OPTICS LETTERS, vol. 7, no. 4, April 1982, pages 186-188, New York (USA); R.A. SOREF et al.: "Calcite 2 x 2 optical bypass switch controlled by liquid-crystal cells".
Designated contracting state (EPC)
DE FR GB NL SE
DOCDB simple family (publication)
EP 0074144 A1 19830316; EP 0074144 B1 19860319; CA 1180095 A 19841227; DE 3269990 D1 19860424; JP S5854322 A 19830331; NL 8104122 A 19830405; US 4852962 A 19890801
DOCDB simple family (application)
EP 82201074 A 19820831; CA 410661 A 19820902; DE 3269990 T 19820831; JP 15339682 A 19820904; NL 8104122 A 19810907; US 41192882 A 19820826